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Optical Imaging for the Energy Spread Estimation of Radioactive Oxygen Ion Beam –Experimental and GATE Simulation Results
https://repo.qst.go.jp/records/77147
https://repo.qst.go.jp/records/771476017ca66-e8a4-48db-921e-320714f73fa1
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-10-16 | |||||
| タイトル | ||||||
| タイトル | Optical Imaging for the Energy Spread Estimation of Radioactive Oxygen Ion Beam –Experimental and GATE Simulation Results | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Kang, Hangyu
× Kang, Hangyu× Yamamoto, Seiichi× Takyu, Sodai× Mohammadi, Akram× Nishikido, Fumihiko× Yamaya, Taiga× Kang, Hangyu× Yamamoto, Seiichi× Takyu, Sodai× Mohammadi, Akram× Nishikido, Fumihiko× Yamaya, Taiga |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Radioactive ion (RI) beams such as 11C or 15O are useful for in situ range verification by in-beam PET for heavy ion therapy due to the complete agreement between the PET peak and the Bragg peak for an ideal mono energy RI beam. On the other hand, there is a shortened Bragg peak for RI beams because of a wider energy spread than the conventional stable beam. Therefore, quality control of the RI beam is important, but no practical methods which can be done routinely have been realized yet. Recently, an optical imaging technique was proposed as a high-resolution beam range estimation method for heavy ion beams. The aim of this study was to estimate the Bragg peak and energy spread of the 15O ion beam by using the optical imaging technique at submillimeter resolution. The same method can be applied to other RI beams such as 11C. A PMMA phantom (10 × 10 × 9.9 cm3) was irradiated by the 15O ion beam with different momentum acceptances of 1, 2, and 4% at the Heavy Ion Medical Accelerator in Chiba (HIMAC). In-beam luminescence and offline-beam Cerenkov-light images were obtained by using a CCD camera sequentially. The energy spread of the 15O ion beam could be estimated from the positional difference between the Bragg peak measured by luminescence imaging and the beam stopping position measured by Cerenkov imaging. The GATE optical simulation results showed good agreement with the experimental results with a maximum error of 0.3 mm in the Bragg peak position. In conclusion, the feasibility of optical imaging was demonstrated for the energy spread estimation of 15O ion beam. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference | |||||
| 発表年月日 | ||||||
| 日付 | 2019-10-31 | |||||
| 日付タイプ | Issued | |||||
